Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (((chieu sang) OR (hieu lang)))) - canh tranh cua thong thong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua thong thong dan than cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua thong thong dan than cao*.